[gtk/matthiasc/for-master] (9 commits) ...Add a few missing includes

[Matthias Clasen <matthiasc src gnome org>]

Summary of changes:

  67a7ad0... entrycompletion: Drop action support (*)
  a0f6ff1... x11: ensure some context is bound before calling glClientWa (*)
  91a96d2... Merge branch 'matthiasc/for-master' into 'master' (*)
  7ff427b... Merge branch 'drop-entry-completion-actions' into 'master' (*)
  1643e81... Merge branch 'wip/fencing-without-context-is-discouraged' i (*)
  1912513... x11: Ensure bound context is compatible with sync fence (*)
  518462d... Merge branch 'wip/fencing-without-context-is-discouraged' i (*)
  34a12f4... entry completion: Drop the Private struct
  83f22fc... Add a few missing includes

(*) This commit already existed in another branch; no separate mail sent